Sensor system and method
First Claim
1. A system for use in the detection or measurement of at least one characteristic relating to a chemical environment, the system comprising:
- an optical fibre arranged to receive light from an optical source;
the system being adapted to let a gas derived from said chemical environment diffuse into the optical fibre thereby altering the optical properties of the optical fibre, so that changes in the optical properties of the optical fibre due to the in-diffusion of said gas can be determined by optical signal detection and signal analysing means for deriving from the determined changes at least one characteristic value representing the chemical environment.
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Accused Products
Abstract
A sensor system for the detection or measurement relating to a chemical environment, comprising an optical fibre, an optical source for launching light into the optical fibre, the sensor system being adapted to let a gas, e.g. hydrogen derived from said chemical environment, diffuse into the optical fibre. The gas thereby alters the optical properties of the optical fibre. The system comprises optical signal detection and signal analysing means adapted for determining changes in the optical properties of the optical fibre due to the in-diffusion of the said gas. The signal analysis means is adapted to derive from the determined changes at least one characteristic value representing the chemical environment.
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Citations
34 Claims
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1. A system for use in the detection or measurement of at least one characteristic relating to a chemical environment, the system comprising:
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an optical fibre arranged to receive light from an optical source;
the system being adapted to let a gas derived from said chemical environment diffuse into the optical fibre thereby altering the optical properties of the optical fibre, so that changes in the optical properties of the optical fibre due to the in-diffusion of said gas can be determined by optical signal detection and signal analysing means for deriving from the determined changes at least one characteristic value representing the chemical environment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of detecting or measuring at least one characteristic relating to a chemical environment, comprising:
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launching light into an optical fibre;
letting a gas derived from the chemical environment diffuse into the optical fibre, thereby altering the optical properties of the optical fibre;
detecting and analysing light from the optical fibre so as to determine changes in the optical properties of the optical fibre due to the in-diffusion of said gas; and
deriving said at least one characteristic value representing the chemical environment from the determined changes.
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Specification